Circuit Breaker Thermal Magnetic 1A 277V 65V (SCHURTER 4420.0837)

Part Overview

The SCHURTER 4420.0837 is a single-pole thermal magnetic circuit breaker rated for 1A at 277V AC and 65V DC, designed for DIN rail mounting with lever actuation. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new installations where this specific model is no longer available from primary sources.

Substiute Parts

4420.0837

SCHURTER Inc.In Stock: 9134420.0837 Datasheet

Current PartRFQ

4420.0595

SCHURTER Inc.In Stock: 7824420.0595 Datasheet

Parametric EquivalentRFQ

2907626

Phoenix ContactIn Stock: 10472907626 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCHURTER 4420.0837 is determined by strict equivalence across the following critical parameters:

• Current Rating: 1A
• Voltage Rating - AC: 277V
• Voltage Rating - DC: 65V (or compatible DC rating)
• Mounting Type: DIN Rail
• Breaker Type: Thermal Magnetic
• Actuator Type: Lever
• Number of Poles: 1

Two substitute parts meet these criteria:

Parametric Equivalent: SCHURTER 4420.0595 matches all electrical and mechanical parameters identically, differing only in packaging (Bulk vs. standard packaging).

Similar Substitute: Phoenix Contact 2907626 matches all critical parameters with a minor DC voltage variance (60V DC vs. 65V DC), maintaining functional compatibility within the specified voltage envelope.

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 4420.0595 is the direct parametric equivalent and preferred choice for applications requiring exact specification matching. Both SCHURTER parts carry identical regulatory approvals (CSA C22.2 No 14, CSA C22.2 No 235, EN 60934, GB 17701, IEC 60934, UL1077, UL508) and RoHS3 compliance. The primary distinction is packaging format.

Phoenix Contact 2907626 serves as an active-status alternative with full AC voltage compatibility (277V) and near-equivalent DC rating (60V vs. 65V). This part carries RoHS3 compliance and REACH Unaffected status. Selection of this substitute is appropriate for applications where the 60V DC rating satisfies system requirements and where sourcing an active product is prioritized over exact legacy specification matching.

Frequently Asked Questions (FAQ)

Q: Can SCHURTER 4420.0595 be used as a direct replacement for 4420.0837?

A: Yes. Both parts are identical in all electrical and mechanical specifications. The difference is packaging format only (standard vs. Bulk). No circuit redesign or validation is required.

Q: Is Phoenix Contact 2907626 compatible with systems designed for 65V DC?

A: Phoenix Contact 2907626 is rated for 60V DC. It is suitable for applications where the system DC voltage does not exceed 60V. For systems requiring the full 65V DC rating, SCHURTER 4420.0595 is the appropriate choice.

Q: What regulatory approvals does Phoenix Contact 2907626 carry?

A: Phoenix Contact 2907626 holds RoHS3 Compliant and REACH Unaffected status. Specific approval agency certifications for this part differ from the SCHURTER series and should be confirmed against system requirements.

Q: Why is the original SCHURTER 4420.0837 marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured by SCHURTER. Existing inventory may be available through authorized distributors, but long-term sourcing relies on equivalent or substitute parts.

Q: Are there packaging considerations when selecting a substitute?

A: SCHURTER 4420.0837 is supplied in standard packaging, SCHURTER 4420.0595 in Bulk packaging, and Phoenix Contact 2907626 in Box packaging. Packaging affects order quantities and handling but does not impact electrical or mechanical function.